Full Join is a keyword, which is used to select all records from the right table and also from the left table.
The Full Join basically returns all records from the left table and also from the right table. For example, let’s say, we have two tables, Table A and Table B. When Full Join is applied on these two tables, it returns us all records from both Table A and Table B. If the condition is not met, then null value is displayed instead.
SELECT columns FROM table1 name FULL JOIN table2 name ON table1.coumn_x = table2.column_y;
where SELECT, FULL JOIN, and ON are the keywords, columns is the list of columns, table1 is the first table and table2 is the second table, and column_x and column_y are the columns for performing Left Join, followed by a semicolon.
Let’s apply Full Join to two tables, the employee table and the department table
Select employee.e_name, employee.e_dept, department.d_name, department.d_location from employee FULL JOIN department ON employee.e_dept = department.d_name;
After writing the query, click on the execute button to check for errors. Once the query is executed, a message appears like ‘Commands completed successfully’.
This brings us to the end of this tutorial sections on JOIN operators.Previous Next
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